The artist’s works are the subject of two New York shows, at the Metropolitan Museum and the Jack Shainman Gallery. By Arthur Lubow A London exhibition shows how the three painters circled one ...

A round green helmet which is simple and without decoration. It is seen from the side, so the shape is in profile. It is mostly an even round shape, which flares out at the bottom. There is a cutout ...

A helmet in a brown metal mostly covered in light green. It has a rectangular cutout in the front for the face. Running from the back to the front there are two parallel pointed ridges. There are also ...